Product Short Description
Product Overview
The MVME162-212 is a 6U VMEbus embedded single-board computer built around Motorola MC68040 CISC microprocessor, designed for legacy industrial real-time control platforms. It provides integrated memory, serial communication, optional SCSI and Ethernet interfaces, supporting IndustryPack mezzanine expansion for customized I/O configuration.
Description
Technical & Performance Parameters
- Processor: MC68040, 25MHz, 8KB unified cache, integrated MMU and FPU
- Main Memory: 4MB parity DRAM, expandable up to 16MB via on-board expansion sockets
- Non-Volatile Memory: 1MB Flash memory for firmware, 128KB battery-backed SRAM
- Real-Time Clock: MK48T08 TOD clock integrated with 8K×8 NVRAM, lithium battery backup
- Bus Interface: VMEchip2 VMEbus controller, supports A24/A32 addressing, D8/D16/D32/D64 BLT block transfer
- Serial Ports: 2×EIA-232-D serial communication ports, maximum baud rate 115.2kbps
- Expansion Interface: 2 IndustryPack (IP) module slots
- Power Input: +5V DC (±5%), typical 3.5A, maximum 4.5A; auxiliary ±12V low-current supply
- Operating Temperature: 0°C ~ 70°C
- Physical Dimension: Standard 6U VME form factor, 233.35mm × 160mm
Functional Features
- Embedded 162Bug monitor/debug firmware for board initialization, testing and boot management
- On-board watchdog timer and six 32-bit programmable timers for real-time task scheduling
- VMEbus master/slave dual-mode operation, supports VME system controller function
- Built-in DMA controller for high-speed data transmission between local bus and VME backplane
- Supports VxWorks, OS-9 and other classic real-time operating systems
Working Principle
The MC68040 processor executes application firmware and operating system code stored in Flash. The local 32-bit synchronous bus interconnects memory, serial controllers and VMEchip2 ASIC. VMEchip2 bridges local bus and VME backplane to realize inter-board data exchange. IndustryPack interfaces extend analog/digital I/O modules to acquire field signals, which are processed by the CPU and transmitted via serial or VMEbus channels.
Material & Structural Characteristics
- Base substrate: Multi-layer FR-4 printed circuit board with controlled impedance routing
- Front panel: Aluminum alloy extrusion with locking ejector handles, status LED indicators
- Connectors: P1/P2 VME backplane connectors, DB-25 serial front panel connectors, IP mezzanine card connectors
- Passive components: Industrial-grade tantalum capacitors, metal film resistors; socketed memory chips for maintenance
Application Scenarios
Legacy industrial automation systems, railway signal control, test measurement equipment, military embedded control, offshore platform auxiliary control, medical imaging legacy control units.
Installation Requirements
- Install into standard 6U VME card cage with proper guide rails; ensure full insertion into P1/P2 backplane connectors
- Maintain forced air cooling airflow across board surface; maximum allowable component temperature 85°C
- Set board address, interrupt level and system controller mode via on-board jumpers before power-up
- Leave minimum 15mm clearance above and below the board for ventilation
Usage Precautions
- Use ESD protection wristband during handling; static discharge will damage on-board ASIC and memory chips
- Regularly inspect lithium backup battery; replace battery within 5 years to avoid loss of SRAM and clock data
- Do not hot-swap the board under powered condition; power down chassis before insertion or removal
- Avoid operation in high humidity, corrosive gas and heavy vibration environments without additional enclosure protection
- Prevent dust accumulation on PCB surface to avoid leakage current and short circuit faults
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